Sealing ring



FIG. 1 is a front elevational view of a sealing ring, showing our new design;

FIG. 2 is a top view thereof;

FIG. 3 is an enlarged cross-sectional view taken on line 3--3 of FIG. 2; and

FIG. 4 is a bottom plan view thereof. 

The ornamental design for a sealing ring, as shown and described. 